Home / 9,261.19-12,780.38-5,282.21

Finding the Fourth Proportional to 9,261.19, 12,780.38 and 5,282.21

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Solution

The fourth proportional to 9,261.19, 12,780.38 and 5,282.21 is: 7,289.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,261.19 : 12,780.38 = 5,282.21 : x
  2. Step 2: Convert to fraction form
    9,261.19/12,780.38 = 5,282.21/x
  3. Step 3: Cross multiply
    9,261.19x = 12,780.38 × 5,282.21
  4. Step 4: Simplify right side
    9,261.19x = 67,508,651.04
  5. Step 5: Solve for x
    x = 67,508,651.04/9,261.19
  6. Step 6: Final answer
    x = 7,289.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.